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Fri, 17 Feb 2023 05:50:42 -0600 From: Nava kishore Manne To: , , , , , , , , , , , , , , , , Subject: [PATCH v6 1/2] firmware: xilinx: Add pm api function for PL config reg readback Date: Fri, 17 Feb 2023 17:20:35 +0530 Message-ID: <20230217115036.2617396-2-nava.kishore.manne@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230217115036.2617396-1-nava.kishore.manne@amd.com> References: <20230217115036.2617396-1-nava.kishore.manne@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT014:EE_|SA0PR12MB7073:EE_ X-MS-Office365-Filtering-Correlation-Id: d6e451f2-9c8c-4b3f-18e6-08db10dd3321 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: xenGZYTtst7InR1/fjKfyanVXoLIQdCmx5NEuUBeDI65sot+Ylq2JcYXnrceUkHtEduO/n7rwoFIXCPheHQkaog+/GgxJtY6HXWm0yP+bvO/so+mAYLpdjT9zBnGljs5uOWphVZOmyq09vjA/g4vDbi8Z6AI/EWgJjBpwSYZk18swDI0UabS5h9igHhwlLkTUdlbviP3BqzIYj/f7MEQ9SgM6slY+zvQ+m+BHDxglj9Ajl2Tyw8JLGc+GTNQ7FFfp3g2PBtCTIRBP9RFQmPvzfjqaK5QAWcuVASKXZN9vVF3vl1PMOhdlnClDglc953qY3W/FkMq9OOKbiZQhI49WMB5yweq/Kt2jlEIrcTFtYC3pRGMPq7r/nu/juHgzusGLiTvtHTX3h9/Yf26xp7wiwgyo5sFXe7eaLIZOKjlmnc7LgMQ9gpTe5XcuiW4NsYgjQaxPJsT6QB4RrBqRo6M5K31TLDpMG/aWJpTroHL3ry5JG0raEiPWy5JWJMhe9pq7xtdJ5jFzy4k5n7TI/6w6bonW4k4LhA96IHN3RT8RrrgtQFteJKfkrt32wtquS4a+37fpt5V8U2F+BnhKbVz9toN7R3P7T+t0UW9BVli8VHjgh4Cmr4z4H8YxPMiNfmgurpWt5Yv92dwvZmD8JAwphPXPu8UTd8IZORo2UYNtD0bD91wQVlAn5fgmmr4xeVKOispnN4a7QwVgxvz1hJr5DG201hhRpAzamVSKuqO5lQc/BxknpKEHgF1qrLMSEg/7lOoaNF5oyOK0Jpsyq7GREMVQk/fil6mbT4mKd3j3O0= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230025)(4636009)(136003)(39860400002)(396003)(346002)(376002)(451199018)(40470700004)(36840700001)(46966006)(36756003)(82310400005)(2906002)(86362001)(40480700001)(2616005)(83380400001)(336012)(47076005)(426003)(81166007)(82740400003)(356005)(40460700003)(36860700001)(921005)(8676002)(70206006)(110136005)(316002)(70586007)(8936002)(41300700001)(7416002)(5660300002)(103116003)(16526019)(1076003)(6666004)(26005)(186003)(478600001)(2101003)(83996005)(36900700001);DIR:OUT;SFP:1101; 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It provides an interface to the firmware(pmufw) to readback the FPGA configuration register. Signed-off-by: Nava kishore Manne --- changes for v2: - None. Changes for v3: - Updated API and config reg read-back handling logic - Updated the commit msg to align with the changes. Changes for v4: - Fixed some minor coding issues. No functional changes. - Updated Return value comments as suggested by Xu Yilun. Changes for v5: - Fixed some minor coding issues as suggested by Xu Yilun. No functional changes. Changes for v6: - None. drivers/firmware/xilinx/zynqmp.c | 33 ++++++++++++++++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 11 ++++++++++ 2 files changed, 44 insertions(+) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 129f68d7a6f5..3d8cc6795b43 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -948,6 +948,39 @@ int zynqmp_pm_fpga_get_status(u32 *value) } EXPORT_SYMBOL_GPL(zynqmp_pm_fpga_get_status); +/** + * zynqmp_pm_fpga_get_config_status - Get the FPGA configuration status. + * @value: Buffer to store FPGA configuration status. + * + * This function provides access to the pmufw to get the FPGA configuration + * status + * + * Return: 0 on success, a negative value on error + */ +int zynqmp_pm_fpga_get_config_status(u32 *value) +{ + u32 ret_payload[PAYLOAD_ARG_CNT]; + u32 buf, lower_addr, upper_addr; + int ret; + + if (!value) + return -EINVAL; + + lower_addr = lower_32_bits((u64)&buf); + upper_addr = upper_32_bits((u64)&buf); + + ret = zynqmp_pm_invoke_fn(PM_FPGA_READ, + XILINX_ZYNQMP_PM_FPGA_CONFIG_STAT_OFFSET, + lower_addr, upper_addr, + XILINX_ZYNQMP_PM_FPGA_READ_CONFIG_REG, + ret_payload); + + *value = ret_payload[1]; + + return ret; +} +EXPORT_SYMBOL_GPL(zynqmp_pm_fpga_get_config_status); + /** * zynqmp_pm_pinctrl_request - Request Pin from firmware * @pin: Pin number to request diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index b09f443d3ab9..ce37d55ffa44 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -71,6 +71,10 @@ #define XILINX_ZYNQMP_PM_FPGA_FULL 0x0U #define XILINX_ZYNQMP_PM_FPGA_PARTIAL BIT(0) +/* FPGA Status Reg */ +#define XILINX_ZYNQMP_PM_FPGA_CONFIG_STAT_OFFSET 7U +#define XILINX_ZYNQMP_PM_FPGA_READ_CONFIG_REG 0U + /* * Node IDs for the Error Events. */ @@ -120,6 +124,7 @@ enum pm_api_id { PM_CLOCK_GETRATE = 42, PM_CLOCK_SETPARENT = 43, PM_CLOCK_GETPARENT = 44, + PM_FPGA_READ = 46, PM_SECURE_AES = 47, PM_FEATURE_CHECK = 63, }; @@ -515,6 +520,7 @@ int zynqmp_pm_aes_engine(const u64 address, u32 *out); int zynqmp_pm_sha_hash(const u64 address, const u32 size, const u32 flags); int zynqmp_pm_fpga_load(const u64 address, const u32 size, const u32 flags); int zynqmp_pm_fpga_get_status(u32 *value); +int zynqmp_pm_fpga_get_config_status(u32 *value); int zynqmp_pm_write_ggs(u32 index, u32 value); int zynqmp_pm_read_ggs(u32 index, u32 *value); int zynqmp_pm_write_pggs(u32 index, u32 value); @@ -721,6 +727,11 @@ static inline int zynqmp_pm_fpga_get_status(u32 *value) return -ENODEV; } +static inline int zynqmp_pm_fpga_get_config_status(u32 *value) +{ + return -ENODEV; +} + static inline int zynqmp_pm_write_ggs(u32 index, u32 value) { return -ENODEV;